I've been thinking about the same sorts of things for a little bit. Crazy thought: What about CGI? "It must be secure while supporting multitenancy" - wouldn'

I've been thinking about the same sorts of things for a little bit. Crazy thought: What about CGI? "It must be secure while supporting multitenancy" - wouldn't apache with suexec and *nix user permissions be enough? "It needs to be fast" - process overhead is less of an issue today, although this would be my biggest concern. "It needs to have an agreed upon data format" - CGI is an open standard "It must be language agnostic" - Yep "It needs to run anywhere" - Yes, including locally for testing It also comes built in with process isolation and statelessness.